Brought to collection at Pt. Reyes Fungus Fair – Bear Valley Visitors Center

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Psathyrella longipes
By: Byrain
2014-01-08 04:59:27 GMT (+0000)

Probably is the same thing as Coprinopsis marcescibilis, if it is not I challenge anyone to demonstrate how it is different. I don’t think Smith adequately demonstrated how, he includes C. marcescibilis at least twice under the names P. fragilissima & P. elwhaensis which are in the same part of the key as P. longipes. He distinguishes them all based on “spores somewhat compressed laterally” vs “spores terete in cross section” + spore sizes, but he doesn’t take into account that C. marcescibilis has a variable spore size.